Here's what Cortex's belly ended up looking like...
As you may be able to tell, I used the wedge method again (just like with Toby), however this time I played around with it a bit. I made the wedges too big so I decided to use 7 instead of the 8 that it would have taken to make the sphere.
A little secret: When using the wedge method to make bodies, play around with the angles at which you cut the arm holes. You can control how much BELLY you want your character to end up with.
I decided to take in the bottom of the belly because I didn't like how big the hole was for my arm. I really like the way it turned out after doing so. It just goes to show, the more you play the more you learn.
